"I don't understand the world in the way that I think other people claim to understand it."

"I have a friend who's an artist and has sometimes taken a view which I don't agree with. He'll hold up a flower and say, 'Look how beautiful it is,' and I'll agree. Then he says, 'You see, as a scient…"

"To every man is given the key to the gates of heaven; the same key opens the gates of hell."

"I'm not a genius. I'm just intensely curious."

"I have no responsibility to be like what other people expect me to be. It's their mistake, not my failing."